Climate Data
Yearly Reports
Interested in what kind of weather occurred in a recent year? Check out the most memorable events below.
 
Hundred Degree Days
 
The pattern on 08/12/2007. A big dome of high pressure settled over the middle of the country to begin August. Temperatures in Little Rock (Pulaski County) climbed above 100 degrees for the first time in 2007, with dangerous heat index values.
In the picture: The pattern on 08/12/2007...with high pressure ("H") over the central United States. Storm systems went around the high well to the north, with little in the way of rain in Arkansas.

 

 

On August 12th, the temperature at Little Rock National Airport/Adams Field (Pulaski County) maxed out at 106 degrees...which was the warmest temperature since August 31, 2000. The 100 degree mark was reached every day from August 9th through the 16th (8 consecutive days). The record for the most consecutive days reaching at least the century mark is 15 from July 5-19, 1980.

 

100 Degree Days in 2007 
Day Temperature
Aug 9 102 F
Aug 10 102 F
Aug 11 102 F
Aug 12 106 F
Aug 13 103 F
Aug 14 104 F
Aug 15 104 F
Aug 16 102 F
Aug 22 100 F
Aug 23 100 F
Aug 24 100 F
Aug 27 100 F
Total Days = 12

 

The Most Consecutive 100 Degree Days
Dates Number of Days
July 5-19, 1980 15
August 25-September 4, 2000 11
August 20-30, 1983 11
August 6-15, 1980 10
August 10-19, 1954 10
August 9-16, 2007 8
 July 22-29, 1952 8
 August 2-9, 1947 8
 September 2-9, 1925 8
 July 27-August 3, 1896 8

 

The years with the most 100 degree days were 1980 with 47 and 1954 with 46 (since 1879). After 1980, there were two years (1998 and 2000) with at least 20 days of 100 degree temperatures (27 days and 26 days respectively). Climatologically, the average number of 100 degree days each year is around 5.

 

 The Most 100 Degree Days
Year Number of Days
1980 47
1954 46
1998 27
2000 26
1943 23
1896 19
 1947 17
 1934 16

 

Hundred degree days at Little Rock (Pulaski County) since 1900.
In the pictures: Hundred degree days at Little Rock (Pulaski County) since 1900. 
 

Since 1900 (through 2006), there were 41 years when temperatures failed to reach 100 degrees (38% of the time). The frequency of these years decreased with time, with only 9 years with no 100 degree temperatures since 1975 (28% of the time). Since 2000, there were 2 years (2002 and 2004).

 

 Years with No 100 Degree Temperatures
Years Number of Years
1900 - 1924 15
1925 - 1949 9
1950 - 1974 8
1975 - 1999 7
Since 2000 2

 

Interestingly enough, from a forecast standpoint...100 degree days do not often occur when there is a lot of ground water. This year, for example, there was well above normal rain in early July (across central and southern Arkansas). This pushed soil moisture to at or above normal levels...with green vegetation. As a result, temperatures in July never made it above 95 degrees (on the 8th and 28th).

When soil moisture is depleted and vegetation dries out (turns brown), temperatures tend to reach 100 degrees more easily. That was the case in August, with a lack of rain and drought conditions developing. There was no measurable rain from July 30th through August 28th (30 consecutive days)...which is one of the top 12 driest periods on record. The record stands at 39 days from July 27 through September 3, 1995.

 

Consecutive Days Without Measurable Rain
Dates Number of Days
July 27-September 3, 1995 39
August 3-September 8, 1936 37
June 14-July 19, 1944 36
May 19-June 22, 1966 35
May 29-July 2, 1952 35
December 15-January 17, 1956 34
July 2-August 3, 1930 33
September 28-October 30, 1924 33
September 29-October 30, 2005 32
June 29-July 30, 1986 32
September 29-October 30, 1963 32
July 30-August 28, 2007 30
May 30-June 28, 1954 30
October 8-November 6, 1944 30

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